Some things that i am concerned about:
1)HTC sensation has adreno 220 GPU and i guess it's better than SGS2's mali 400 or even Nvidia's Geforce as adreno 205 is already renowned and tested. Also in the benchmark tests, SGS2 lagged behind Optimus 2x.

2)But SGS2 on the other hand has more internal storage(useful since many applications still cannot be moved to the SD) and RAM as compared to sensation.

We have the same argument statement touted again & again what I can say is that in my opinion SAMSUNG used plastic for its qualities ESPECIALLY STRENGHT WHILST BEING LIGHT
I guess the use of AL does add grammes to a phone.
BTW i see more and more smartphones with some sort of protection e.g silicone skins etc
The only time I and others SGS II future owners know of the plastic body is when others remind us.
and in fairness GORILLA GLASS & PLASTIC
Only 2 defectors (brothers I understand) so far to other brands... SLIM & NONEhttp://www.gsmarena.com/compar...dPhone2=3621
what am I looking at again ??

This phone is a dream come true....... The only thing it would need to be the ultimate phone is a qHD display (960x540).... Other than that, Super Amoled plus screen, 21 Mbps modem, 4.2 Inch Display and HD cameras... sign me up!

You may recon that this is the “Phone of the year” but I will rate this 7/10.

Reasons:-
Sound
This phone does not have a loud and clear sound quality like the Nokia n8 or boom box speakers like HTC.

Camera.
It does not have a 12mp camera with at least 4x zoom with xenon camera flashlight with Carl Zeiss optics and it also lacks a lens-cover like the Nokia n900.
It should have a retina display.

Design.
It also lacks scratch proof touch screen and does not feel solid in hands like the iphone 4. The phone must have a strong body and it must not be just made of ordinary and soft plastic. It must be made tough to withstand drop-tests.

Software and Hardware.
It would have been even better if it would have 4.5 inch display and with honeycomb and 480 x 854 pixels. I myself own a Samsung galaxy s 2. This does not show 1GB RAM as stated and the phone gets slower after constant usage. The battery used is also very weak which is 1650 mAh, a phone with dual core processor must have a strong battery I suggest at least 2100 mAh which will last for long.

Personal Opinion.
Samsung thinks that smartphones which are lighter and thinner are better but people don’t care they only want performance. Samsung should create more secure and stylish smartphones.

If Samsung corrects these mistakes then The Samsung Galaxy S2 Will be Called the Phone of the Year.

HTC sensation just announced ;D wow now we have true competition.. LG vs Motorola.. while Gsii vs Sensation
i think now GSii will Loose there ground because nobody likes the Touchwiz in comparision to HTC Sense. also the plastic body is also hated by the users in comparision to Htc's body which they prefer aluminum !!! wow Galaxy s was true success now Samsung are in trouble.. they should release it NOW before its too late because Htc Sensation will be released within a month :) !!! Samsung.. ur sinking i love Gsii i love Sensation i love Lg i love Moto :D but the competition is now in 100% favor of HTC !!! :) best of luck to all brands !!! Also HTC Never change there release date unlike motorola or samsung or lg or even nokia. who keep changing playing with the hearts of there customers.. wow . HTC has really slapped all the brands very hard this time :) love there strategy !!!